alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED QwixxRAT - Telegram CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/bot"; startswith; content:"/sendMessage?chat_id="; distance:0; content:"text|3d e2 98 a0 20|Qwixx|20|Steal"; distance:0; fast_pattern; http.host; content:"api.telegram.org"; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; reference:url,www.uptycs.com/blog/remote-access-trojan-qwixx-telegram; classtype:trojan-activity; sid:2047647; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_14, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family QwixxStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_01, reviewed_at 2024_10_01; target:src_ip;)